Source : Webster's Revised Unabridged Dictionary (1913)

Depurate \Dep"u*rate\, v. t. [imp. & p. p. {Depurated}; p. pr. &
   vb. n. {Depurating}.]
   To free from impurities, heterogeneous matter, or feculence;
   to purify; to cleanse.

         To depurate the mass of blood.           --Boyle.